2 Corinthians 8:3-4
For, according to their power, I bear witness, and beyond their power, they gave of their own accord;
2 Corinthians 8:12
for, if the readiness is present, it is acceptable according to what one has, not according to what he has not.
2 Corinthians 8:17
For he accepted, indeed, our exhortation; but, being very earnest, he went forth to you of his own accord.
2 Corinthians 9:5
I thought it necessary, therefore, to exhort the brethren, that they should go before to you, and make up beforehand your previously promised bounty, that this may be ready as a matter of bounty and not as of covetousness.